Multi-section decoding lens
Multiple transform utilization and applications for secure...
One-dimensional bar code symbology and method of using same
Optical encryption interface
Optical image encryption and decryption processes
Patterning device for security facsimile systems
Photographic products and methods employing embedded information
Procedure for marking binary coded data sets
Projector with enhanced security camcorder defeat
Secure application of seals
Secure spread spectrum watermarking for multimedia data
Secure spread spectrum watermarking for multimedia data
Secure viewing of display units by image superposition and wavel
Security document including subtle image and system and...
Security threads
Selective encryption of mixed raster content layers
Self-authentication of value documents using encoded indices
Steganographic methods and media for photography
System and method for data security
System and method for encrypting sensitive information